I wish to inform you that last year, the state of California sued the nation's big three tuna producers, demanding they place warnings on cans of albacore and light tuna or post signs in grocery aisles to inform state residents that the products contain mercury. The state alleges the firms are violating a state law requiring business to warn people before exposing them to carcinogens or reproductive toxins. The case is continuing. Further, you may contact an attorney or the FDA and seek guidance in the matter.